ip185051011000.rev.easyname.ch has no MX records.
Question and response
Question
dig ip185051011000.rev.easyname.ch. MX
Answer
The response has no answer records.
Authority
rev.easyname.ch. 3600 SOA nsi1.easyname.com. hostmaster.easyname.com. 2016022299 3600 1800 1814400 3600
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0